| 1 | 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* @license\n * Copyright 2017 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport * as environment from './environment';\nimport {Environment} from './environment';\n\ndescribe('initializes flags from the url', () => {\n // Silence console.warns for these tests.\n beforeAll(() => spyOn(console, 'warn').and.returnValue(null));\n\n it('no overrides one registered flag', () => {\n const global = {location: {search: ''}};\n const env = new Environment(global);\n spyOn(env, 'getQueryParams').and.returnValue({});\n\n env.registerFlag('FLAG1', () => false);\n expect(env.get('FLAG1')).toBe(false);\n });\n\n it('one unregistered flag', () => {\n const global = {location: {search: ''}};\n const env = new Environment(global);\n spyOn(env, 'getQueryParams').and.returnValue({\n 'tfjsflags': 'FLAG1:true'\n });\n expect(env.features).toEqual({});\n });\n\n it('one registered flag true', () => {\n const global = {location: {search: '?tfjsflags=FLAG1:true'}};\n const env = new Environment(global);\n env.registerFlag('FLAG1', () => false);\n\n expect(env.get('FLAG1')).toBe(true);\n });\n\n it('one registered flag false', () => {\n const global = {location: {search: '?tfjsflags=FLAG1:false'}};\n const env = new Environment(global);\n env.registerFlag('FLAG1', () => true);\n\n expect(env.get('FLAG1')).toBe(false);\n });\n\n it('two registered flags', () => {\n const global = {location: {search: '?tfjsflags=FLAG1:true,FLAG2:200'}};\n const env = new Environment(global);\n env.registerFlag('FLAG1', () => false);\n env.registerFlag('FLAG2', () => 100);\n\n expect(env.get('FLAG1')).toBe(true);\n expect(env.get('FLAG2')).toBe(200);\n });\n});\n\ndescribe('flag registration and evaluation', () => {\n it('one flag registered', () => {\n const env = new Environment({});\n\n const evalObject = {eval: () => true};\n const spy = spyOn(evalObject, 'eval').and.callThrough();\n\n env.registerFlag('FLAG1', () => evalObject.eval());\n\n expect(env.get('FLAG1')).toBe(true);\n expect(spy.calls.count()).toBe(1);\n\n // Multiple calls to get do not call the evaluation function again.\n expect(env.get('FLAG1')).toBe(true);\n expect(spy.calls.count()).toBe(1);\n });\n\n it('multiple flags registered', () => {\n const env = new Environment({});\n\n const evalObject = {eval1: () => true, eval2: () => 100};\n const spy1 = spyOn(evalObject, 'eval1').and.callThrough();\n const spy2 = spyOn(evalObject, 'eval2').and.callThrough();\n\n env.registerFlag('FLAG1', () => evalObject.eval1());\n env.registerFlag('FLAG2', () => evalObject.eval2());\n\n expect(env.get('FLAG1')).toBe(true);\n expect(spy1.calls.count()).toBe(1);\n expect(spy2.calls.count()).toBe(0);\n expect(env.get('FLAG2')).toBe(100);\n expect(spy1.calls.count()).toBe(1);\n expect(spy2.calls.count()).toBe(1);\n\n // Multiple calls to get do not call the evaluation function again.\n expect(env.get('FLAG1')).toBe(true);\n expect(env.get('FLAG2')).toBe(100);\n expect(spy1.calls.count()).toBe(1);\n expect(spy2.calls.count()).toBe(1);\n });\n\n it('setting overrides value', () => {\n const env = new Environment({});\n\n const evalObject = {eval: () => true};\n const spy = spyOn(evalObject, 'eval').and.callThrough();\n\n env.registerFlag('FLAG1', () => evalObject.eval());\n\n expect(env.get('FLAG1')).toBe(true);\n expect(spy.calls.count()).toBe(1);\n\n env.set('FLAG1', false);\n\n expect(env.get('FLAG1')).toBe(false);\n expect(spy.calls.count()).toBe(1);\n });\n\n it('set hook is called', () => {\n const env = new Environment({});\n\n const evalObject = {eval: () => true, setHook: () => true};\n const evalSpy = spyOn(evalObject, 'eval').and.callThrough();\n const setHookSpy = spyOn(evalObject, 'setHook').and.callThrough();\n\n env.registerFlag(\n 'FLAG1', () => evalObject.eval(), () => evalObject.setHook());\n\n expect(env.get('FLAG1')).toBe(true);\n expect(evalSpy.calls.count()).toBe(1);\n expect(setHookSpy.calls.count()).toBe(0);\n\n env.set('FLAG1', false);\n\n expect(env.get('FLAG1')).toBe(false);\n expect(evalSpy.calls.count()).toBe(1);\n expect(setHookSpy.calls.count()).toBe(1);\n });\n});\n\ndescribe('environment.getQueryParams', () => {\n it('basic', () => {\n expect(environment.getQueryParams('?a=1&b=hi&f=animal'))\n .toEqual({'a': '1', 'b': 'hi', 'f': 'animal'});\n });\n});\n"]} |